/**
  ******************************************************************************
    @file    usbd_ioreq.c
    @author  MCD Application Team
    @version V1.1.0
    @date    19-March-2012
    @brief   This file provides the IO requests APIs for control endpoints.
  ******************************************************************************
    @attention

    <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>

    Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
    You may not use this file except in compliance with the License.
    You may obtain a copy of the License at:

           http://www.st.com/software_license_agreement_liberty_v2

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

  ******************************************************************************
*/

/* Includes ------------------------------------------------------------------*/
#include "usbd_ioreq.h"

/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
    @{
*/


/** @defgroup USBD_IOREQ
    @brief control I/O requests module
    @{
*/

/** @defgroup USBD_IOREQ_Private_TypesDefinitions
    @{
*/
/**
    @}
*/


/** @defgroup USBD_IOREQ_Private_Defines
    @{
*/

/**
    @}
*/


/** @defgroup USBD_IOREQ_Private_Macros
    @{
*/
/**
    @}
*/


/** @defgroup USBD_IOREQ_Private_Variables
    @{
*/

/**
    @}
*/


/** @defgroup USBD_IOREQ_Private_FunctionPrototypes
    @{
*/
/**
    @}
*/


/** @defgroup USBD_IOREQ_Private_Functions
    @{
*/

/**
    @brief  USBD_CtlSendData
          send data on the ctl pipe
    @param  pdev: device instance
    @param  buff: pointer to data buffer
    @param  len: length of data to be sent
    @retval status
*/
USBD_Status  USBD_CtlSendData (USB_OTG_CORE_HANDLE  *pdev,
                               uint8_t *pbuf,
                               uint16_t len)
{
	USBD_Status ret = USBD_OK;
	pdev->dev.in_ep[0].total_data_len = len;
	pdev->dev.in_ep[0].rem_data_len   = len;
	pdev->dev.device_state = USB_OTG_EP0_DATA_IN;
	DCD_EP_Tx (pdev, 0, pbuf, len);
	return ret;
}

/**
    @brief  USBD_CtlContinueSendData
          continue sending data on the ctl pipe
    @param  pdev: device instance
    @param  buff: pointer to data buffer
    @param  len: length of data to be sent
    @retval status
*/
USBD_Status  USBD_CtlContinueSendData (USB_OTG_CORE_HANDLE  *pdev,
                                       uint8_t *pbuf,
                                       uint16_t len)
{
	USBD_Status ret = USBD_OK;
	DCD_EP_Tx (pdev, 0, pbuf, len);
	return ret;
}

/**
    @brief  USBD_CtlPrepareRx
          receive data on the ctl pipe
    @param  pdev: USB OTG device instance
    @param  buff: pointer to data buffer
    @param  len: length of data to be received
    @retval status
*/
USBD_Status  USBD_CtlPrepareRx (USB_OTG_CORE_HANDLE  *pdev,
                                uint8_t *pbuf,
                                uint16_t len)
{
	USBD_Status ret = USBD_OK;
	pdev->dev.out_ep[0].total_data_len = len;
	pdev->dev.out_ep[0].rem_data_len   = len;
	pdev->dev.device_state = USB_OTG_EP0_DATA_OUT;
	DCD_EP_PrepareRx (pdev,
	                  0,
	                  pbuf,
	                  len);
	return ret;
}

/**
    @brief  USBD_CtlContinueRx
          continue receive data on the ctl pipe
    @param  pdev: USB OTG device instance
    @param  buff: pointer to data buffer
    @param  len: length of data to be received
    @retval status
*/
USBD_Status  USBD_CtlContinueRx (USB_OTG_CORE_HANDLE  *pdev,
                                 uint8_t *pbuf,
                                 uint16_t len)
{
	USBD_Status ret = USBD_OK;
	DCD_EP_PrepareRx (pdev,
	                  0,
	                  pbuf,
	                  len);
	return ret;
}
/**
    @brief  USBD_CtlSendStatus
          send zero lzngth packet on the ctl pipe
    @param  pdev: USB OTG device instance
    @retval status
*/
USBD_Status  USBD_CtlSendStatus (USB_OTG_CORE_HANDLE  *pdev)
{
	USBD_Status ret = USBD_OK;
	pdev->dev.device_state = USB_OTG_EP0_STATUS_IN;
	DCD_EP_Tx (pdev,
	           0,
	           NULL,
	           0);
	USB_OTG_EP0_OutStart(pdev);
	return ret;
}

/**
    @brief  USBD_CtlReceiveStatus
          receive zero lzngth packet on the ctl pipe
    @param  pdev: USB OTG device instance
    @retval status
*/
USBD_Status  USBD_CtlReceiveStatus (USB_OTG_CORE_HANDLE  *pdev)
{
	USBD_Status ret = USBD_OK;
	pdev->dev.device_state = USB_OTG_EP0_STATUS_OUT;
	DCD_EP_PrepareRx ( pdev,
	                   0,
	                   NULL,
	                   0);
	USB_OTG_EP0_OutStart(pdev);
	return ret;
}


/**
    @brief  USBD_GetRxCount
          returns the received data length
    @param  pdev: USB OTG device instance
          epnum: endpoint index
    @retval Rx Data blength
*/
uint16_t  USBD_GetRxCount (USB_OTG_CORE_HANDLE  *pdev, uint8_t epnum)
{
	return pdev->dev.out_ep[epnum].xfer_count;
}

/**
    @}
*/


/**
    @}
*/


/**
    @}
*/

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
